rotation vs twirl

rotation

noun
  • The act of turning around a centre or an axis. 

  • The step during takeoff when the pilot commands the vehicle to lift the nose wheel off the ground during the takeoff roll. (see also: V2) 

  • A regular variation in a sequence, such as to even-out wear, or people taking turns in a task; a duty roster. 

  • A single complete cycle around a centre or an axis. 

  • An operation on a metric space that is a continuous isometry and fixes at least one point. 

  • The set of starting pitchers of a team. 

  • Repeated play on a radio station, etc. 

  • The earth's rotation about its axis is responsible for its being slightly oblate rather than a sphere. 

twirl

noun
  • A movement where a person spins round elegantly; a pirouette. 

  • A little twist of some substance; a swirl. 

  • Any rotating movement; a spin. 

  • A prison guard. 

verb
  • To twist round. 

  • To pitch. 

  • To rotate rapidly. 

  • To perform a twirl. 

How often have the words rotation and twirl occurred in a corpus of books? (source: Google Ngram Viewer )